Rear Differential Coupling Growl (Whine) Noise - Toyota RAV4 Forums
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Old 11-02-2018, 11:38 PM Thread Starter
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FIX - Rear Differential Coupling Growl (Whine) Noise

Hey Everyone. (2008 RAV4 Sport I4)

I wanted to get a good thread with some COMPLETE information for the Rear Differential Noise that MANY of us have gone through and will go through.

I just spent half my day completing this and I wanted to give you all the information I have as I don't want any of us to have to pay Toyota's ridiculous cost for a new Coupler (About 1k).

I went ahead and attached a Toyota Technical Service Bulletin to this threat that will list out EVERYTHING that i had to do to complete this job. While I know that there have been several threads to note the T-SB-0080-13 Bulletin, I think it would be beneficial to list out not only that but some other parts.

I got this (FEBEST KIT-ST215 Transmission Coupling Kit). 18.99$ on Amazon for USA. I can confirm this one will work for the 2008 RAV4. I did see that it changed in 2009-2012. So please keep that in mind.

After following the bulletin and getting the coupler out, I had to get a shop to press out and in the new bearing for me. I paid around 70$ for them to clean up the housing, the dust shield, and press the new bearing in. (Way cheaper then a new coupler!)

It sounds fantastic now and no Jet Turbine noise. It seems that bearing got updated and only one side was sealed on the original bearing in the housing. There was a rubber gasket that went on the bearing but the backside was not sealed. This caused a lot of water to go in and corrode the bearing.

I HIGHLY suggest you download the Service Bulletin and follow the steps. The only thing I will say is that the Drive Shaft does stick on the coupler very hard so you will need to pry that up. We got a chisel/Pry bar under there and lifted it up without a ton of fuss.

I am also debating creating a video on this so more individuals can come to the correct info because of the videos on the Matrix Coupler and a lot of questions about the RAV4 are asked on there.

Any questions about this, please let me know. I hope this helps someone out!
Attached Files
File Type: pdf T-SB-0080-13.pdf (1.40 MB, 82 views)
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Old 11-03-2018, 08:17 AM
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I greatly appreciate your efforts and know how much time it takes to pull all the info together.

I definitely agree with how tight the driveshaft sticks into the coupler having experienced that when I replaced my rear subframe. You almost wonder if there's some secret bolt you're missing. And that was after Toyota replaced my coupler for free because I thought I heard a noise.

I remember other threads on the subject and am thinking that with links to useful ones, some info on the '09-'12 part numbers, and maybe a video, this is sticky material.

Fred
2006 RAV4 V6 4WD Barcelona Red Limited - wife's
2006 Accord V6 Hybrid - Dr. Dyno's - quick as the RAV but +8 mpg
2003 Odyssey V6 - handy people & cargo mover
1999 F-250 4X4 Diesel - snow plow, Bully Dog chip
2003 F-250 4X4 - eventual replacement for the '99
2001 F-250 4X4 Diesel - truck camper, TS chip, 20' bike/trike dyno trailer
2004 Suzuki DRZ-400S Dual Sport
1968 Volvo 1800S

It's the pedal (or the handgrip) on the right!!


"If you really believe you get what you pay for there's no such thing as a good deal."
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Old 11-05-2018, 10:39 AM Thread Starter
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Thanks for the response!

I will be able to record a video within the week. (Just an overview and will direct traffic to this

I am also gathering a lot of info to include in the main post. I have the part # s for the Narrow bearing for 09-2012 as well.



Narrow Bearing for 09-2012 (According to Rav4Cle) "The part number is NSK 6819-2RS according to some research I've done." <- This is more expensive but still worth it IMO.

I also want to let EVERYONE know to use ANAEROBIC GASKET MAKER when putting the Coupler back on. This is not up for debate, please use that.
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Old 01-03-2019, 07:20 PM
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Quote:
Originally Posted by neumansmom View Post
Thanks for the response!

I will be able to record a video within the week. (Just an overview and will direct traffic to this

I am also gathering a lot of info to include in the main post. I have the part # s for the Narrow bearing for 09-2012 as well.



Narrow Bearing for 09-2012 (According to Rav4Cle) "The part number is NSK 6819-2RS according to some research I've done." <- This is more expensive but still worth it IMO.

I also want to let EVERYONE know to use ANAEROBIC GASKET MAKER when putting the Coupler back on. This is not up for debate, please use that.
Great info thanks... Any luck with the video yet?
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Old 01-10-2019, 09:58 PM
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What exactly is anaerobic gasket maker, and why is it necessary?
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Old 01-11-2019, 08:11 AM
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Is this for the noise everyone hears at 50ish MPH? About every 30 seconds?

2006 Toyota Rav4
V6 AWD Sport
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Old 01-11-2019, 08:32 AM
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Originally Posted by JWags81 View Post
Is this for the noise everyone hears at 50ish MPH? About every 30 seconds?
If it is I found a solution. Noting that the LED I have connected to the electro-coupler drive signal lit dimly at about that frequency (but with no noise) I upgraded my '06's 4WD ECU to the newer 89630-42040 (replaces -42010) version, about $40 on eBay, and the LED never comes on on dry roads as before. I can't imagine the previous behavior was doing the coupler any good.

Fred
2006 RAV4 V6 4WD Barcelona Red Limited - wife's
2006 Accord V6 Hybrid - Dr. Dyno's - quick as the RAV but +8 mpg
2003 Odyssey V6 - handy people & cargo mover
1999 F-250 4X4 Diesel - snow plow, Bully Dog chip
2003 F-250 4X4 - eventual replacement for the '99
2001 F-250 4X4 Diesel - truck camper, TS chip, 20' bike/trike dyno trailer
2004 Suzuki DRZ-400S Dual Sport
1968 Volvo 1800S

It's the pedal (or the handgrip) on the right!!


"If you really believe you get what you pay for there's no such thing as a good deal."
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Old 01-11-2019, 09:27 AM
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The above tech bulletin is specific to the early 4.3's, is there a tech bulletin for the 09 to 12 Rav's?
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Old 01-11-2019, 10:57 AM
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The TSB in post 1 refers to 2006 - 2012 and is for the coupler replacement. I had that done but still had my coupler drive LED coming on consistently on dry pavement until I upgraded to the 4WD ECU for 08-12 models.
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Old 01-11-2019, 12:55 PM
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But as you noted above, there is a difference in parts (and I suspect procedure) specific to 09 to 12's.
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